Game Boy Advance overclockers

When I saw loopy had released a SNES emulator I thought it was great! There were some limitations because of GBA processing speed, so we came up with a design to successfully overclock the GBA that is compatible with flash carts (so far - read on). We've already sent a prototype of our design for loopy to test with and he has had success with his Flash Advance Turbo 128, and we have successfully tested on our Flash2Advance 256. Unfortunately, though, it looks like different brands of Flash carts are reacting slightly differently to the Acceleration, so this is where we want to ask the community for their help. We want to test with all flash cart brands out there so we can finalize our design to be compatible with as many carts as possible.